Lipid-mobilizing composition



3,002,888 LIPlD-MOBILIZING COMPOSITION Joseph Seifter, Berwyn, and David H. Baeder, Philadelphia, Pa., assignors to American Home Products Corporation, New York, N.Y., a corporation of Delaware No Drawing. Filed June 11, 1958, Ser. No. 741,230 Claims. (Cl. 167-74) This invention relates to a lipid mobilizer obtainable by dialysis from blood of stressed animals or from the posterior pituitary of normal animals, and to its separation and recovery. Our product has value in the regulation of fat mobilization and the controlled depletion of fat depots in the animal organism.

This application is a continuation-in-part of our copending application for a Lipid Mobilizer, Serial No. 559,530, filed January 17, 1956, and of our copending application for Method of Preparing a Lipid Mobilizer, Serial No. 622,536, filed November 16, 1956, both now abandoned.

In recent years extensive investigations have been carried out On the effect of non-specific stress on animal organisms and in particular on the eflect of such stress on the lipid content of the blood, liver and fat depots such as subcutaneous, perirenal and epididymal fats. Results have been confusing, showing considerable species variability and also variability with time, with individuals and with diet. For example, Selye said in 1950 (The Physiology and Pathology of Exposure to Stress, Acta Inc, Montreal, 1950, page 145), We do not 'wish to attempt any detailed analysis of these conflicting data, but both the facts reported in the literature and our own observations suggest that under normal conditions, in the intact organism, neither cortical extracts nor DCA exert any prominent and constant effect upon the totallipid and cholesterol content of the blood.

In contrast with this conclusion and subsequent to its publication, We made the observation that the lipemiaclearing action of certain agents in rat blood was consistently inhibited by treatment with cortisone and by exposure to cold. (Proc. Soc. Exptl. Biol. Med., 86 (1954 709-713.

These results suggested that under certain conditions a definite and novel lipid mobilizer was developed in the blood. We have now confirmed this and have devised a method for consistently removing and recovering this factor in a highly potent form from blood of a considerable number of species, viz. from humans, dogs, horses and rats, and from the posterior pituitan'es of hogs. By lipid mobilizer we mean an agent that activates the lipids in the fixed fat depots of the body and causes their movement into the circulatory system.

The LD in mice, rats, guinea pigs, albino rabbits and dogs of the lipid mobilizer, which we designate here as L.M., has been determined. Also the effect of prolonged intravenous administration to rabbits, dogs and humans has been studied.

In general the gross effect of the administration of L.M. for a controlled period of time has been to produce a persistent hyperlipemia in properly prepared animals, as explained below, and in humans suffering from certain chronic diseases. By properly prepared, we mean animals in which the function of the liver has been interfered with by the administration of certain insectinited States Patent cides, antioxidants or antibiotics. Chronic disease refers to such diseases as cancer of the intestinal tract or liver, leukemia, anemia, uremia and cardiac disease. It is generally recognized in medical practice that all these diseases interfere with the function of the liver. Thus whether or not this mobilization of fat results in an increase of the lipid content of the blood depends on the condition of the liver; the normal liver is capable of handling an increased fat load so that injection of L.M. does not result in general hyperlipemia.

In animals and humans with normally functioning liver, the lipemia is seen only in the blood going to the liver via the portal vein.

We have demonstrated the fat-mobilizing potency of L.M. in animals whose livers were sensitized (subclinicaP fatty liver), e.g. by feeding on chow containing a small amount of toxicant (Wayne Chow Checkers supplemented with K penicillin G (4 g./ton) and 0.005% butylated p-hydroxy anisole), or by dips or sprays commonly used to rid animals of parasites. Injection of L.M. in animals so sensitized produced a sharp increase in the plasma content of cholesterol, total fatty acids and lipid phosphorus and in the optical density. On desensitization by changing the diet to a chow which did not contain liver toxicants, L.M. injection did not increase the plasma lipid level but tended to increase the cholesterol and fatty acid content of the liver, as found in experiments with rats.

The toxicity of our lipid mobilizer (L.M.) is low, the eifective dose (ED being not more than ,6 the LD In sensitized rats, intravenous injection of 1 mg./kg. L.M. produced hyperlipemia persisting for 6 hours; 60 mg./kg. produced hyperlipemia lasting 7 days. Repeated single weekly intravenous injections of L.M. in sensitized dogs and rabbits resulted in sustained hyperpemia in which all elements of the plasma lipids were still elevated at least twofold 7 days after injection. In diseased human patients, intravenous injection of 0.25 to as much as 10 mg./kg. produced elevated plasma co centrations of cholesterol, fatty acids and lipid phosphorus without the development of chills, fever or other signs of toxic reactions.

The overall dosage range for all species ranged from 0.25 mg./kg. to rug/kg. intravenously and 1.0

mg/kg. to 500 mg./kg. intramuscularly. By mouth L.M.

has not been observed to have effect in any species.

Our lipid mobilizer has utility in both man and lower animals in rapid mobilization of fats for calories in shock and trauma, depletion of excess fat deposits, and removal of fatty tumors. It may be used in animal husbandry and in veterinary practice, e.g. to ameliorate the condition of obese overfed and underexercised pets.

In humans in conditions in which they are unable by normal physiological mechanism to discharge adequate amounts of L.M. into the blood stream to meet the challenge of shock, trauma, surgery and chronic disease, the administration of L.M. mobilizes adequate amounts of fats for caloric use.

Our dialyzable lipid mobilizer differs from hitherto known lipid-mobilizing agents in substantial respects. Its etfective constituent is a non-protein low-molecular-weight polypeptide; it contains no cortisone or other steriods as determined by infrared analysis and by the Porter Silber and Liebermann-Burchard reactions.

Our lipid mobilizer differs from protamine in being dialyzable and heat-stable and in producing lipemia of considerably longer duration and in the absence of the adrenals and the pituitary, both of which are required for such protamine action. It differs from arginine, for example, in that arginine' at mg./ kg. produced no lipemia in rats andlarger doses were fatal. Pituitary gland growth hormone has been reported to be an activelipid mobilizer; our product differs from it in being dialyzable and heat-stable and in failing to promote growth even when accompanied by pronounced hyperphagia. L.M. in

fact may produce loss in weight in spite of heavy eating,

as will be shown below. Furthermore, We know of no cases where the injection of cortisone increases the amount of growth hormone in circulation, whereas it strongly stimulates the production of L.M. The adipokinetic hormone extractable from the anterior pituitary is free of growth-promoting or ACTH properties but is capable of mobilizing lipids. This hormone, however, also produces ketosis. No ketone bodies have been found in the blood or urine of rats treated with L.M. ACTH stimulates the adrenal cortex and the presence of the adrenals is required for its action. Levin and Farber state (Proc. Soc. Exp. Biol. and Med., 74 (1950), 759): the property of mobilization of fat to the liver cannot be ascribed solely to the action of adrenocorticotrophic hormone (ACTH) acting via the usually accepted route, e.g. by stimulation of the secretory activity of the adrenal cortex On the other hand there is almost complete agreement that total adrenalectomy completely prevents fat mobilization by pituitary preparations which are active, in this respect, in intact animals.

L.M. acts in the absence of the adrenals. I

The lipid mobilizing factor of our product is present in small detectable amounts in most normal blood, but stress of some sort is required to stimulate its production to substantial levels. In rats we have been able to stimulate its production by cortisone injection, by exposure to cold and by nephrosis produced by injecting anti-kidney serum. Other forms of induced non-specific stress which stimulate the production of L.M. are the injection of protamine and the'administration of convulsant drugs such as diisopropylfluorophosphate (DFP) or cholic acid. These are non-specific 'stressors, acting by stimulating the pituitary gland. We call the result of such stimulation hyperactivity of the pituitary. Trauma and surgical manipulation act in the same way. The ratio of the content of L.M. in untreated and treated plasma in humans, horses, dogs and rats was about 1:300 on -the basis of rug/kg. of body weight, but on the basis of volume of original plasma the ratio wasabout lclOOi). The most practical method for its production so far discovered in cortisone injection, and horses or other ungulates such as cattle serve as the preferred source animals. The amount of cortisone used may vary over a Wide rangefrom a minimal dose to near the toxic limit; the so induced production of L.M. will vary in the same sense. i

A physiologically identical material is contained in posterior' pituitaries of hogs and a simple method, described below, has been devised for its preparation.

The following examples of preparation and use of our are intended to'be' illustrative only and not to limit our invention, the scope of which is defined in the appended claims.

EXAMPLE liar-PREPARATION PROM House PLASMA BYDIALVYSIS Horses fasted for 24 hours are injected intramuscularly with 5 mg. 11-dihydro-17-hydroxy corticosterone-Zl acct-ate/kg. of body weight. Four hours later they are bled aseptically from the jugular vein into 0.1 M Na citrate (1:9 whole blood) and the blood stored at 5 C. for 72 hours to permit settling of the cells. Viscose casing (No-lax) is sterilized by exposure to ethylene oxide. The plasma is decanted and dialyzed into an equal volume of sterile demineralized water through the sterilized casing for 72 hours at 25 C. with constant agitation in closed sterile containers. The dialysate is concentrated and dried by freeze-drying.

The product is an amorphous white-to-pale-yellow solid, freely soluble in water, less soluble in methanol and insoluble in ethanol, acetone and other organic solvents; it is not extractable by ether from either acid or alkaline aqueous solutions; it is dialyzable through a semipermeable membrane of the viscose type, comprises a lowmolecular-weight-polypeptide as the active ingredient, is non-protein, free of steroids, heat-stable and gives an atypical ninhydrin reaction-at this stage, blue.

Bulk lots may be prepared from several liters of plasma under conditions minimizing bacterial and pyrogen contamination.

EXAMPLE lB.-FURTHER PURIFICATION This product while effective and suitable for injection, contains substantial amounts of inorganic salts which are inert as lipid mobilizers.

The L.M. constituent may be further concentrated and purified as disclosed in detail in application of Friedrich W. Zilliken for Method of Purifying a Dialyzable Lipid Mobilizer Contained in Blood, Serial No. 741,229, filed June 11, 1958.

In general the purification steps may comprise adsorption from the aqueous plasma dialyzate to a water-insoluble adsorbent such as benzoic acid, which is soluble in organic solvents, separating the adsorbent and adsorbate from the aqueous phase, dissolving the adsorbent in an organic solvent such as acetone, and separating the undissolved L.M. from the solvent by centrifugation and decantation.

I The product contains all the L.M. activity in enhanced potency. it is an amorphous powder, soluble in water and insoluble or difficultly soluble in ethanol, acetone, ethyl ether, chloroform, dioxane, methylethyl lretone, tetrahydrofurane and the like.

This material may be further purified by fractional precipitation from an aqueous solution by the stepwise addition of absolute ethanol, the active fraction coming down at vol. percent ethanol and pH 3.S-4.0.

Further purification may be effected by chromatography on a cellulose column. The 95-percent ethanol fraction may be dissolved in 0.1 N acetic acid, passed through the column and eluted with an n-butanol-acetic-acid-water solution, the eluate being collected in fractions. The active material emerges as a narrow ninhydrin-positive peak.

To obtain the active material in crystalline form, the active fraction is rechromatographed on cellulose and the active fraction dried at low temperature. The residue consists of colorless prismatic needles which on electrophoresis travel as a single spot. This material gives a yellow ninhydrin reaction. On hydrolysis a number of amino acids are obtained and qualitatively identified by paper chromatography. These include alanine, glycine, leucine, glutamic acid and lysine.

This material exhibits maximum L.M. activity in sensitized rats. Pending complete determination of its chemical constitution and structure, it is designated for convenience as L.M.-0c.

Ten grams of hog posterior pituitary lobe, quick frozen immediately after slaughter, were finely diced with knives 6 Table I L.M. ACTIVITY OF PLASMA DIALYZATES PREPARED UNTREATED AND CORTISONEJNJEOTED ANI- 1 Mice and rats were red Wayne Chow Checkers (see above); guinea pigs and rabbits were sprayed with Gulf Live Stock Spray in a chlordane di guinea pigs, rabbits and dogs received chow containing aureomycin,

on a large mortar and ground to a fine powder with the 5 E 33 addition of 3 g. of alcohol-washed sea sand. Physiologic N b f y (13 5 za salt solution was added slowly in small aliquots until 100 Species Treatment er mes fi f ml. was thoroughly mcorporated. 'Ihe macerate was animals showing intracentrifuged for two hours at 4000 r.p.m., the supernatant 10 g it venfilusly removed, the volume adjusted to 500 wit-h physiologic sengistsiaed salt solution, and passed through an ultra-fine porcelain filter resulting in material that was found to be sterile Human None 10 10 285 and pyrogen free. The entire procedure was earned out Horse qo 2 4 4 300 at 5 C. One hundred m1, representing 2 g. of lyop 'l- 5 321: 2 S ized posterior lobe, was dialyzed through a viscose casing cortisone 2 5 5 Rat one 10 300 No-Jax agamst 400 ml. of deionized water 1n a sealed Do cortisone 2 10 10 0. 95 container for 24 hours at 5 C. after which the dialyzate gg f 10 0 500 was freeze-d1ied for 18 hours. All steps of the dialysis 20 and fi 'f y W ere carried with i 1Log spaced doses-10 rats/dose for each dialyzateat least 100 rats per and in sterile containers. The dr ed matenal welghrng gggfg 179 mg. was dissolved in physiologic salt solution to give a final concentration of 0.1% and was then passed through EXAMPLE 6-ACTION OF FROM HOG an ultra-fine porcelain filter to furnish a solution suitable POSTERIOR PITUITARY LOBE for injection. This final product was found to be sterile L.M. for injection, prepared as described in Example and pyrogen free. 2, was tested in laboratory animals with the results described below. Concurrently the effects of vasopressin, EXAMPLE 3' PREPARATION F ROM COLD oxytocin, saline extract of striated muscle, and saline ex- STRESSED RATS tracts of anterior and posterior lobes of hog pituitaries, Sensitized Wistar rats are stressed by placing them respect'wtly were tested for 12 hours in a refrigerator whose temperature is 5 :1 in 2 11 ;22 22? e figizg f fi' fi ig gi ggg? E rats g anesfltleuzed z 2 i fi g? t-ained on 0.9% NaCl in drinking water. Hypophysec- P y car ac punc W1 1 a tornized rats were maintained on oranges and White bread. P i (1'9) to prevfmt c l 1 e f P asm'a Operated animals were used 10-14 days after surgery. is dlalyzed fl lwugh Vlscose casmg P a Water All injections were intravenous into unanesthetized anibath containing an equal volumeof deirnnerahzed water ma1s Blood Samples f mice, rats and guinea Pigs for 6 hours Wlth constant agltatlon 111 Example were obtained from the left ventricle of the beating heart The dialyzate is freeze-dried for 72 hours. 40 exposed under light ether anesthesia. Dogs were bled from the recurrent saphenous vein and rabbits from the EXAMPLE 4.-PREPARATION FOR INJECTION marginal ear vein. Our freeze-dried L.M., made as described in Example l Increase m the hpld plasma hypophysecio' 1A, may be prepared for injection by dissolving it in m1zed rats was observed 2 hours after 1n ect1on when 111- te f0 median (USP) to a concentmfion of 3 8p eoted with vasopressm, 20 u./kg., oxytocm, 10 u./kg., wa r r 1 ti th saline extract of hog anterior pituitary lobe, or saline excent m t so u on rough a e as tract of striated muscle respectively. On the other hand fi'lter 9 and aseptlcauyfilhng rubber'stoppered 2 injection of a saline extract of hog posterior pituitary vlals Wlth the filtered Solutionproduced a rise in plasma lipid components. L.M. for EXAMPLE 5 COMPARISON OF ACTIVITY injection, from the dialyzate of the saline extract of hog FROM TREATED AND UNTREATED ANIMALS posterior pituitary, at a dosage level 0f 1 mg./ kg. PIO- duced a pronounced rise in plasma lipid components in The following Table I gives a comparison of the lipidseveral species which lasted for at least 6 hours. In rats, mobilizing activity of plasma from treated and untreated mice and dogs the elevation at the 24th hour was still animals. The column headings are self-explanatory. significant. The following table summarizes the results.

Table II L.M. FOR INJECTION FROM HOG POSTERIOR PITUITARY LOBE-EFFEOT OF 1 MGJKG. (SOLIDS BAsIs) ON PLASMA COMPONENTS OF SENSITIZEDI ANIMALS OF VARIOUS SPECIES WHEN INJECTED INTRAVENoUsLY Time in hours after injection Species Numbet 0 1 2 4 6 24 CH FA LP CH FA LP CH FA LP OH FA LP CH FA LP OH FA LP Intact rats 00 62 104 e 196 212 9 '262 303 10 302 353 12 348 302 12 134 212 s Hypophysectomized rats 20 5s 92 5 242 303 11 Adrenalectomlzed rats 20 64 88 5 258 312 11 Mice--. s0 52 95 a 195 20s 8 312 340 12 402 386 15 440 490 10 120 212 8 Guinea pi so 102 5 186 195 9 245 200 10 322 330 11 385 402 13 84 92 e abbits 12 e2 5 262 o 240 .304 11 320 386 13 360 412 14 75 142 8 Dogs 6 0 290 340 11 380 400 18 412 400 19 402 440 18 196 220 9 dogs were dipped Noru.--CH= total plasma cholesterol; FA=tota1iatty acids; LP=l1pld phosphoru mg. percent.

EXAMPLE 7.-EFFECT OF L.M. ON PLASMA LIPIDS OF SENSITIZED ANIMALS OF VARIOUS SPECIES The following Table III shows the change in content EXAMPLE 9.-WEIGHT; FOOD INTAKE AND PLASMA LIPIDS OF L.M.-TREATED SENSITIZED 2 RABBITS Table V gives data for rabbits similar to those given and composition of plasma lipids in various species in 5 for dogs in Example 8.

Table V EFFECT OF L.M. (MEAN VALUES MG. PERCENT) ON PLASMA LEVELS OF LIPIDS IN0 RABBITS 60 MG. DI- ALYZATE/KG. IV ONCE WEEKLY Week of treatment T C '1 0 T C T C '1 O T C Total CPL.-- 72 00 150 58 200 65 290 65 350 60 350 62 Total fatty a 200 200 325 210 400 205 490 205 580 210 575 210 Lipid P 6 6 9 6 13 6 13 6 14 6 13 6 Gms. food taken deily 190 190 300 200 575 225 800 250 950 275 1, 000 275 Body weight (kg.) 2. 4 2. 4 2. 7 2.9 2. 5 3.3 2. 6 3.8 2. 8 4. 0 2. 7 4. 2

one hour after intravenous injection. Initial and final results are shown in mg. percent for cholesterol, fatty acids, lipid phosphorus and optical density.

EXAMPLE 10.COMPARISON OF THE ACTION OF L.M. ON SENSITIZED AND UNSENSITIZED RATS The data in the following Table VI demonstrate the effect of L.M. on concentration of lipids in liver and Table III MEAN CONCENTRATIONS (MG. PERCENT) OF LIPIDS IN PLASMA OF SENSITIZED ANIMALS 1 HOUR AFTER INJECTION OF L.M.

Total Ch FA LP OD Animal Number Mg./kg.

Initial 1 111. Initial 1 hr. Initial 1 111'. Initial 1 hr.

1 As in Table II Nors.-Cl1=cholester0l; FA -fatty acids; LP=lipid phosphorus; OD=(optieal density); negative logarithm of transmittance:

logloT.

EXAMPLE 8.-WEIGHT, FOOD INTAKE AND PLASMA LIPIDS OF L.M.-TREATED SENSI- TIZED 1 DOGS The following Table IV shows the effect on dogs of continued treatment with intravenous L.M. Plasma lipid concentration and composition, daily food intake and change in body weight are shown for treated (columns headed T) and untreated (columns headed C) dogs during '7 weeks of treatment and two subsequent weeks.

1 sensitized by dripping in a chlordane dip and by aureomycin in their food.

plasma of fasted rats during desensitization and resensitization. The largest accumulation of lipids in liver as a result of fasting occurred in rats exposed longest to the Wayne diet. Two hours after intravenous injection of 5 mg. L.M./kg. sensitized, fasted rats had an elevation of total cholesterol and total fatty acids in plasma and a decrease of cholesterol in liver. As desensitization proceeded L.M. produced a progressive decline in plasma 2 sensitized by exposure to Gulf Live Stock Spray and by aureomycin in their food.

Table IV EFFECT OF L.M. (MEAN VALUES MG. PERCENT) ON PLASMA LEVELS OF LIPIDS IN 6 SENSITIZED DOGS MG. DIALYZATE KG. IV ONCE WEEKLY) Week of treatment T C T C T C T C T C T C T C T C T C T C Total CH, 83 84 165 50 190 91 220 95 245 90 240 90 210 240 50 202 189 86 Ester CH 58 59 58 118 61 134 63 150 61 142 59 135 142 51 122 59 110 58 Total FA 212 213 440 208 520 270 680 225 590 206 540 208 606 2'30 030 218 420 209 250 215 Lipid P. 7 6 12 6 12 7 14 7 13 7 13 7 12 6 13 6 1O 7 8 7 Gms. food 1; en daily 265 250 370 265 5 10 275 550 280 550 275 552 270 550 280 550 280 500 280 450 280 Body Weight (kg.) 6 6 7 5 7 4 8 4 8 4 8 4 9 5 8 6 8 9 8 N0'rE.-CH=cholesterol; T=receiving L.M.; O=control; FA=iatty acids; (l-) =L.M. discontinued;

eooasee of all plasma lipid components following a single iniection which persisted for at least 24 hours. Samples obtained 24 hours after the 4th injection and th injection 5 also showed marked elevation of all lipid components. H., suffering from moderate internal hydrocephalus and partial right hemiplegia (Table IX), who received the material for 12 consecutive days, also showed marked elevations of plasma lipid components.

cholesterol and tatty acids and an increase in accumulation of cholesterol and total fatty acids in liver. Re-

sensitization resulted in reappearance of the'hyperlipemia and decrease in liver cholesterol.

Table VI EFFECT OF L.M. ON LIPIDS IN LIVER (PERCENT) AND PLASMA (MG. PERCENT) 2 HR. AFTER 5 MGJKG. IV,

RATS SERIES 10 Table VIII Liver plasma Liver Plasma EFFECT OF CHRONIC ADMINISTRATION OF L.M. fasted, fasted, fasted, fasted, 1 t/ 5 A S m.) Week Diet L.M. L.M. no L.M no L.M

. Plasma lipid components (mg. OH FA CH FA CH FA CH FA Percent) Time Total Total fatty Lipid $2 i2; cholesterol acids phosphorus 4. 6 4. 9 82 2:2 i'g 2% Control 286 320 6.28 4 3 4 1 60 D 262 312 5. 96 2 2 3 9 74 J. 0. 1..- 502 666 13. 28 L 2 3. 7 200 24 hrs. after in No. 1 596 484 10. 42

24 hrs. after inj. N0. 4. 418 408 9. 22 24 hrs. after inj. N o. 5.-. 462 413 8. 72 NorE.CB=cholesterol; FA=total fatty acids; S=Sensitized by chow containing K penicillin G (4 gJton) and 0.005% bntylated parahydroxyanisole (Wayne Chow Checkers). 25 Table IX EFFECT OF CHRONIC ADMINISTRATION OF L.M.,

EXAMPLE 11.-ROLE OF THE LIVER ON FAT 1 MGJKG. IV/DAY FOR 12 DAYS (H) MOBILIZATION IN DOGS Tests were carried out on dogs with normal livers and Plasma lipid comp)onents (mg.

percent on dogs with subclinically damaged livers due to ex- Time posure to chlorinated-hydrocarbon insecticides and anti- Total Totalfatty Lipid biotic in their chow. Dogs were anesthetized with inchflestewl fields Phosphorus travenous nembutal and through a laparotomy incision a Pre-treatment 240 352 7.92 polyvinyl catheter was inserted into the superior mesen 1 hraftermj' N 418 872 1265 term vein which drains into the portal vein. The lapa- 3hlll-s,aftrinj 1 512 940 14.62 7 24 rs.a erinj. o. 62 758 10.84 rotomy incision was closed. A catheter was inserted into 2411M after mi N0 495 806 u 62 the vena cava so that the tip lay between the liver and 24111-5. after r No. 5.. 542 900 12.84 the heart. These samples were designated posthepatic. g fi- 352 i 82; $22 Simultaneous samples were obtained at the start of the g grmper inj. 130. g; I036 rs.ac"n'. o. 1. 2 experiment. The L.M. (5 mg./kg. was in ected m- 40 61 g -g 10 n 854 986 M65 travenously and blood samples obtained at appropriate 24hrS-after1HJ-NO-12 672 842 -8 intervals. The plasmas were analyzed for blood lipids.

Table VI] ROLE OF LIVER ON FAT MOBILIZATION IN DOGS Time (hrs.)Injection of L.M.

Plasma Lipids (mg. percent) on FA LP CH FA LP on FA LP 011 FA LP Su erior niesenterlc vein (prehepatic)... 60 4 62 310 4 68 325 5 58 360 5 Dogs 11131 liver- ""{PoEthepatic vena cava 82 143 g g 1% :3 g 120 2 g Su erior mesenterlc vein (prehepatic 52 13 5 0 Dogs W141 damaged '{Pogthepatic vena, cava 82 6 90 162 6 300 s 300 325 9 NorE.CH=total cholesterol; FA==tota1 fatty acids. LP=lipid phosphorus.

EXAMPLE 12.EFFECT OF L.M. ON HUMANS EXAMPLE l3.-EFFECT OF A SINGLE INJECTION Two patients were placed on chronic administration of OF ON PLASMA LIPIDS IN 8 PATIENTS l nag/kg. L.M. intravenously per day. Samples were 70 Patients suffering from the indicated diseases were drawn at various intervals as indicated in Tables VIII fasted overnight. A sample of blood was obtained from and IX and the change in plasma lipid components measthe cubital vein. L.M. was injected intravenously and mad. then blood samples were taken from the cubital vein Results..F., a 71 year old male suffering from cerebral at appropriate intervals and analyzed for plasma lipids. infarction, (Table VIII) showed an immediate elevation 75 Results are shown in the following Table X.

Table X Plasma lipids Dose of Time rug/100 m1. Case No. and diagnosis L.M. in

iugllkg. hrs.

. 'ICI-I TFA LP 1. Generalized carcinoma 0.25 126 282 6.85 238 341 10.07 1 275 354 10.37 2 244 358 10. 59 3 238 367 i). 18 2. Metastatic carcinoma of rectum 0, 50 0 132 275 7, 00 it 263 392 10. 52 1 290 411 10. 98 2 285 400 11.20 3 276 398 11. Q0

3. Metastatic carcinoma of stom- 1,0 0 186 295 7.2

ach. 36 288 392 10. 55 1 310 404 11. 69 2 309 399 11. 83 3 326 408 11.42 4. Acute mye ose emia--- 1. 0 0 122 202 4.28 650 440 14. 07

5. Cerebral vascular accident with 1. 0 0 172 3 6. 8

thrombocytopenic purpura. 322 486 11.28 1 344 480 11. G7 2 388 492 11. 8O 3 298 490 11.25

6. Metastatic carcinoma of rectum- 1. 0 0 210 325 6. 9

395 512 11. 55 1 412 492 11.91 2 404 488 12.24 3 400 486 12. 02 7. Rheumatoid arthritis 1.0 0 235 318 6.24 2 482 526 12. 28 6 312 442 11. 68 24 322 402 10. 95

8. Rheumatoid arthritis 1.0 0 302 329 7.0

No'ru.TCH=tota1 cholesterol; TFA=total fatty acids; LP=lipid phosphorus. EXAMPLE 14.-MOBILIZATION OF LIPIDS FROM OMENTAL AND MESENTERIC FAT DEPOTS BY L.M. IN HUMANS A human female patient requiring an abdominal operation was fasted overnight. This patient had a normally functioning liver. Pre-operatively a blood sample was taken from the cubital vein. A laparotomy was performed and blood samples obtained from the gastroepiploic vein and artery. Three hundred mg. L.M. mg./kg.) was then administered to the patient intravenously. Twenty minutes later blood samples were again obtained from the gastro-epiploic vein and artery. Blood samples were obtained from the cubital vein 5 and 24 hours after administration of L.M. The plasmas were analyzed for the various lipid fractions. The gastroepiploic veing transports blood to the portal vein and therefore represents pro-hepatic blood; the gastro-epiploic artery transports blood from the aorta to the mesentery and omental fat depots.

Table XI LIPID MOBILIZATION IN A PATIENT HAVING A NOR- MALLY FUNGTIONING LIVER AND UNDERGOING AN OPERATION Plasma lipids rug/100 ml.

TCH TFA PERIPHERAL AND rosr-unm'rrc BLOOD Cubital vein, preoperatively, before L.M. injcction 317 382 5 hours after L.M. injection 396 402 24 hours after L.M. injection 399 414 FEE-HEPATIC BLOOD Gastroepiploic vein. before L.M. injection 308 352 20 minutes after L.M. injection 328 524 rnmrnnnnnnnn POST-HEPATIC moon Gastroopiploic artery, before L.M. injection 312 356 20 minutesaiter L.M. injection 330 360 Thestressof a surgical operation normally results in lipid-mobilization from the fat depots into the blood stream and transport to the liver to meet the increased caloric demands of the organism. This action, however, ordinarily requires several hours, say 2 to 4, to reach an effective level. The data in Table XI show that the administration of L.M. can anticipate the bodys need for fats, under operative stress, by considerably more than an hour-with consequent benefit to the patient at a critical time. in the present case the total fatty acid content of the blood going to the liver rose from 352 to 524 rug/ ml. in 20 minutes after receiving an injection of L.M.-a rise of 50 percent. The liver of this patient was able to handle this increased supply as evidenced by the substantially unchanged fat levels in post hepatic blood-cubital vein and gastroepiploic artery.

From the above disclosure it will be apparent that we have discovered a novel and potent lipid-mobilizing factor useful in several fields of human and veterinary therapy and have devised a method for its preparation in a use ful injectable form.

We claim:

1. The method of preparing a lipid-mobilizing composition having the property when injected of mobilizing fat into the blood stream which comprises: subjecting a mammal to non-specific stress such as to cause hyperactivity of the posterior pituitary gland, thereafter removing blood from said stressed animal, separating the plasma from the whole blood, dialyzing the plasma through a semi-permeable membrane against water in the absence of an organic solvent, and freeze-drying the dialyzate.

2. The method according stressor is cortisone.

3. The method according to claim 1 in which the stressor is subjection to a sub-normal temperature above 0 C.

4. The method according to claim 1 in which the stressor is a convulsant drug.

5. The method of preparing a lipid-mobilizing composition having the property when injected of mobilizing fat into the blood-stream which comprises injecting cortisone into an ungulate, thereafter bleeding the injected animal and collecting the blood, separating the plasma from the whole blood, dialyzing the plasma through a semipermeable membrane against water in the absence of an organic solvent and under sterile and pyrogen-free conditions, and freeze-drying the dialyzate.

6. The method of preparing a parenteral solution which comprises dissolving the dried solid product of the process defined in claim 5 in water for injection (U.S.P.) in a physiologically effective concentration, filtering the resulting solution through a bacterial filter, and filling the resulting filtrate under aseptic conditions into sterile containers.

7. A composition suitable for parenteral injection when dissolved in water and having the property of mobilizing fat from the fat depots into the blood stream of injected animals, said composition being the dialyzate obtained by dialysis against water, in the absence of an organic solvent, of the blood plasma of non-specifically stressed mammals, the stress being such as to cause hyperactivity of the posterior pituitary gland, said composition being free of proteins, ACTH and steroids and comprising inert salts and an active constituent designated as L.M.-u, said L.M.-0t being isolatable from said composition by fractional adsorption, fractional precipitation from aqueoue ethanol and fractional chromatography on cellulose, said L.M.-a being a White crystalline solid polypeptide giving a positive yellow ninhydrin reaction, soluble in water and dilute ethanol, insoluble in non-polar organic solvents, yielding on acid hydrolysis the following amino acids-alanine, glycine, leucine, glutarnic acid and lysinetraveling as a single spot on electrophoresis, and having a high lipid-mobilizing potency.

to claim 1 in which the 8. A parenteral solution comprising the composition defined in claim 7 dissolved in a physiologically eilective concentration in a pyrogen-free aqueous medium.

9. The method of treating an animal organism to mobilize fat from fat depots of the organism into the 5 blood stream to meet increased fat demand under stress conditions which comprises parenterally injecting into the animal the solution defined in claim 8 in an amount in the range from 0.25 to 120 mg. per kg. of body weight.

10. L.M.-oc being a substance elaborated in recoverable amounts by the hyperactivity of the posterior pituitary gland of n0n-specifically stressed mammals and isolatable from the dialyzate against water, in the absence of an organic solvent, of the blood plasma of such stressed mammals, said L.M.-a having the property when parenterally injected of mobilizing fat from the fat depots into the blood stream of injected animals, said L.M.-oz consisting essentially of a white crystalline solid polypeptide, free of inert blood salts, proteins, ACTH and steroids, giving a positive yellow ninhydrin reaction, being soluble in water and dilute ethanol, insoluble in nonpolar organic solvents, yielding on acid hydrolysis the following amino acidsa1anine, glycine, leucine, glutamic acid and lysine-and traveling as a single spot on electrophoresis.

References Cited in the file of this patent UNITED STATES PATENTS 2,433,879 Wretlind Jan. 6, 1948 OTHER REFERENCES Bongiovanni: Proc. of the Soc. for Exptl. Biol. and

Med., vol. 87, November 1954, pp. 282, 286.

Axelrod: Arch. of Biochem. and Bioph-y. 50: 2, June 1954, pp. 347-353.

Levin: Procs. of the Soc. for vol. 74, 1950, pp. 758-763.

Stumph: Proc. of the Sec. for vol. 86, 1954, pp. 219-223.

Kleiner: Human Biochem., 3rd St. Louis, Mo., p. 596.

Pincus: The Hormones, Academic Press, N.Y., vol. 2, 1950, pp. 453-471; vol. 3, 1955, pp. 254-256, 281- 282, 400-425.

Rosenberg: PSEBM, vol. 82, 1953, pp. 701-707.

Heifter, A.: Handbuch der Experimentallen Pharmakologie, vol. 3, Edwards Bro., Inc., Ann Arbor, Mich., 1945, as cited in PSEBM 91: 1, January 1956, pp. 42-45.

Exptl. Biol. and Med.,

Exptl. Biol. and Med.,

ed., 1951, Mosby Co.,

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,002,888 October 3 1961 Joseph Seifter et a1.

It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below. 7

Column 3 line 58 for "'in read r"" is column 5, line 45, for "water for injection" read Water for Injection column 7 line 58 in the footnote for "dripping" read dipping columns 7 and 8 Table IV last portion of thetitle, for v(6O MG. DlALYZATE KG. IV ONCE WEEKLY)" read (60 M,G';

DIALY ZATE/KG IV ONCE WEEKLY) column 11 Table x under the heading "'LP" line 10 thereof for "1190" read 10990 same column ll line 50 for "veing" read vein column 1'2 lines 67 and 68 for "aqueoue" read aqueous Signed and sealed this 8th day of May 1962c (SEAL) Attest:

DAVID L. LADD Commissioner of Patents ERNEST W SWIDER Attesting Qfficer 

1. THE METHOD OF PREPARING A LIPID-MOBILIZING COMPOSITION HAVING THE PROPERTY WHEN INJECTED OF MOBILIZING FAT INTO THE BLOOD STREAM WHICH COMPRISES: SUBJECTING A MAMMAL TO NON-SPECIFIC STRESS SUCH AS TO CAUSE HYPERACTIVITY OF THE POSTERIOR PITUITARY GLAND, THEREAFTER REMOVING BLOOD FROM SAID STRESSED ANIMAL, SEPARATING THE PLASMA FROM THE WHOLE BLOOD, DIALYZING THE PLASMA THROUGH A SEMI-PERMEABLE MEMBRANE AGAINST WATER IN THE ABSENCE OF AN ORGANIC SOLVENT, AND FREEZE-DRYING THE DIALYZATE.
 7. A COMPOSITION SUITABLE FOR PARENTERAL INJECTION WHEN DISSOLVED IN WATER AND HAVING THE PROPERTY OF MOBILIZING FAT FROM THE FAT DEPOTS INTO THE BLOOD STREAM OF INJECTED ANIMALS, SAID COMPOSITION BEING THE DIALYZATE OBTAINED BY DIALYSIS AGAINST WATER, IN THE ABSENCE OF AN ORGANIC SOLVENT, OF THE BLOD PLASMA OF NON-SPECIFICALLY STRESSED MAMMALS, THE STERSS BEING SUCH AS TO CAUSE HYPERACTIVITY OF THE POSTERIOR PITUITARY GLAND, SAID COMPOSITION BEING FREE OF PROTEINS, ACTH AND STEROIDS AND COMPRISING INERT SALTS AND AN ACTIVE SONSTITUENT DESIGNATED AS L.M.A, SAID L.M.-A BEING ISOLATABLE FROM SAID COMPOSITION BY FRACTIONAL ADSORPTION, FRACTIONAL PRECIPITATION FROM AQUEOUE ETHANOL AND FRACTIONAL CHROMATOGRAPHY ON CELLULOSE, SAID L.M.-A BEING A WHITE CRYSTALLING SOLID POLYPEPTIDE GIVING A POSITIVE YELLOW NINHYDRING REACTION, SOLUBLE IN WATER AND DILUTE ETHANOL, INSOLUBLE IN NON-POLAR ORGANIC SOLVENTS, YIELDING ON ACID HYDROLYSIS THE FOLLOWING AMINO ACIDS-ALANINE, GLYCINE, LECUINE, GLUTAMIC ACID AND LYSINETRAVELING AS A SINGLE SPOT ON ELECTROPHORESIS, AND HAVING A HIGH LIPID-MOBILIZING POTENCY. 